A uniform magnetic field "B" into the plane is present in the region enclosed by a circle of radius "R" .A particle of charge 'q' and mass m enters normally into this region with speed v as shown. It comes out normally after time T as shown in figure. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen. lf T=(pi R)/(nv) find "n" .[Neglect gravity]

A particle of charge q and mass m enters normally (at point P) in a region of magnetic field with speed v. It comes out noramally from Q after time T as shown in Fig. The magnetic field B is present only in the region of radius R and is uniform. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which of the following expression (s) is are correct?

A positive charge particle of charge q, mass m enters into a uniform magnetic field with velocity v as shown in the figure. There is no magnetic field to the left of PQ. Find time spent

A charge particle of charge q and mass m is moving with velocity v as shown in fig In a uniform magnetic field B along -ve z-direction.Select the correct alternative (s).

A particle of charge -q and mass m enters a uniform magnetic field vecB (perpendicular to paper inward) at P with a velocity v_0 at an angle alpha and leaves the field at Q with velocity v at angle beta as shown in fig.

A particle of charge q and mass m moving with a velocity v along the x-axis enters the region xgt0 with uniform magnetic field B along the hatk direction. The particle will penetrate in this region in the x -direction upto a distance d equal to

A particle of charge q and mass m is moving along the x-axis with a velocity v and enters a region of electric field E and magnetic field B as shown in figures below. For which figure the net force on the charge may be zero?